LP-WeatherSeal 600
High-Performance Neutral Cure Silicone Weatherproofing Sealant
Movement Capability: ±50% |
Extreme UV & Temperature Resistance |
Standards: ASTM C920 / ISO 11600|
LP-WeatherSeal 600 is a premium, single-component neutral-cure silicone sealant engineered for demanding architectural curtain walls and exterior building facades. Featuring ±50% dynamic movement capability, outstanding UV stability, and unyielding resistance to extreme weather conditions, it ensures long-term, crack-free weatherproofing protection for glass, aluminum, and metal panel structures.
Key Performance Features
±50%Dynamic Movement Accommodation
Superior elasticity allows the joint to flex and recover under severe wind loads, thermal expansion, and structural movement without cracking or debonding.
Extreme Weather & UV Immunity
Unaffected by prolonged sunlight, ozone, rain, snow, or extreme temperature fluctuations (-50% to +150%); maintains long-term flexible sealing without yellowing.
Neutral Cure & Non-Corrosive
Releases no acidic vapors during curing; non-corrosive to sensitive metals, coated glass, anodized aluminum, and masonry substrates.
Primerless Adhesion to Non-Porous Surfaces
Delivers powerful, primerless adhesion to most common architectural building materials including glass, metal panels, and coated alloys.
Technical Specifications
| Physical Property | Technical Value | Test Standard |
|---|---|---|
| Chemical Base | Neutral Silicone (Oximic / Alkoxy) | Internal Standard |
| Sag / Flowability | Non-sag (0 mm) | ASTM C639 |
| Movement Capability | ±50% | ASTM C920 (Class 50) / ISO 11600 |
| Tack-Free Time | 15 – 25 Mins (23°C, 50% RH) | ASTM C679 |
| Curing Rate | 2 – 3 mm / 24 Hours | Internal Standard |
| Shore A Hardness | 25 – 35 | ASTM C661 |
| Tensile Strength at Peak | ≥ 1.2 MPa | ASTM D412 |
| Elongation at Break | > 450% | ASTM D412 |
| Service Temperature | -50°C to +150°C | Internal Standard |
Applications & Substrates
Primary Applications
Commercial Glass & Aluminum Curtain Wall Systems
Exterior Facade Weatherproofing Joints & Cladding
Glass Canopy, Skylights & Daylight Roof Sealing
Perimeter Sealing Around High-End Window & Door Frames
Architectural Metal Panel Expansion Joints
Compatible Substrates
Architectural Glass & Coated Glass |
Anodized & Powder-Coated Aluminum |
Stainless & Galvanized Steel |
Granite & Masonry|
Application & Surface Prep Guide
Surface Cleaning
Clean all joint substrates using the "two-rag wipe" method with a clean lint-free cloth and solvent (e.g., Isopropanol) to completely eliminate oil, grease, moisture, or dust.
Backer Rod Installation & Masking
Insert a closed-cell PE backer rod into the joint cavity to ensure two-sided adhesion only. Apply masking tape precisely to joint margins to protect adjacent finishes.
Extrusion & Tooling
Dispense LP-WeatherSeal 600 smoothly and continuously using a manual or pneumatic caulking gun. Tool the sealant within 10–15 minutes with a spatula to press the sealant firmly against joint walls. Remove masking tape immediately after tooling.
Curing & Vulcanization
Protect the uncured sealant from heavy rain, standing water, and direct impact during initial tack-free period. Full curing depends on joint depth and ambient humidity.
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